CN107116200B - Thimble board stop device and mould of using thereof - Google Patents
Thimble board stop device and mould of using thereof Download PDFInfo
- Publication number
- CN107116200B CN107116200B CN201710429463.3A CN201710429463A CN107116200B CN 107116200 B CN107116200 B CN 107116200B CN 201710429463 A CN201710429463 A CN 201710429463A CN 107116200 B CN107116200 B CN 107116200B
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- China
- Prior art keywords
- swing arm
- ejector plate
- positioning base
- positioning
- ejector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The ejector plate limiting device is characterized by comprising a positioning base and a vertically arranged swing arm, wherein the lower end part of the swing arm is rotatably arranged on the positioning base, a transverse boss is fixedly connected to the right side face of the upper end part of the swing arm and used for supporting the ejector plate, and an ejector spring capable of elastically ejecting the swing arm towards the right is arranged on the left side of the swing arm. Therefore, the jacking spring can be arranged far away from the upper template, the damage to the jacking spring caused by high temperature generated in the casting process is reduced, the service life of the jacking spring can be effectively prolonged, and the jacking spring can be conveniently replaced.
Description
Technical Field
The invention relates to an ejector plate limiting device and a die applying the ejector plate limiting device.
Background
In order to prevent the ejector plate from freely falling, a stopper device capable of limiting the position of the ejector plate must be provided. Casting machines generally used in the market are not provided with a reverse pull rod capable of positioning the ejector plate, and as a remedy, the ejector plate is limited by arranging an ejector spring on a casting die. As shown in fig. 1, a pull rod 4 and a pressing spring 3 are arranged between an upper template 5 and an ejector plate 2, and the pressing spring 3 is sleeved on the pull rod 4. In order to position the pull rod 4, an ejector pin plate 1 is further provided on the ejector plate 2. During the casting process, the temperature of the casting mold is high, and the top pressure spring directly contacts the upper template 5, so that failure is easily caused. When the ejector pin plate is replaced, the ejector pin plate 1 and the ejector pin plate 2 need to be detached firstly, then the position rod 4 is taken out, and then the jacking spring 3 is replaced. It is very inconvenient to maintain.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to improve a knock plate stopper device, to prolong the life of a knock spring in the knock plate stopper device, and to simplify maintenance and replacement operations of the knock spring. In view of the above, the invention provides an ejector plate limiting device, which is characterized by comprising a positioning base and a vertically arranged swing arm, wherein the lower end part of the swing arm is rotatably arranged on the positioning base, a transverse boss is fixedly connected to the right side surface of the upper end part of the swing arm and used for supporting the ejector plate, and an ejector spring capable of elastically ejecting the swing arm towards the right side is arranged on the left side of the swing arm.
The positioning base is a member for providing fixed-point support for the swing arm, and may be a member that is independent from and fixed to an upper die plate to be discussed below, or a structure that is provided on the upper die plate and is integrally formed with the upper die plate.
The lower end part of the swing arm is rotatably arranged on the positioning base, so that the swing arm can swing left and right around a rotating shaft between the positioning base and the swing arm.
The transverse boss may be a member that is separate from the swing arm and is fixed to the swing arm, or a structure that is provided on the swing arm and is integrally formed with the swing arm. When the swing arm swings left and right around the rotating shaft, the transverse boss moves left and right along with the swing arm.
The ejector plate comprises an ejector plate body, a transverse boss and an ejector spring, wherein the ejector spring is arranged on the left side of the swing arm and can elastically eject the swing arm towards the right, and therefore the ejector spring can apply right ejecting force to the swing arm, the transverse boss can overcome the weight of the ejector plate body, and the ejector plate body can be supported to prevent the ejector plate body from falling. When a driving device applies downward external acting force to the ejector plate, the ejector plate can overcome the jacking force of the jacking spring to force the swing arm to swing towards the left side, meanwhile, the transverse boss also moves towards the left to avoid the ejector plate, and the ejector plate slides downwards.
According to the technical scheme, the ejector plate limiting device supports the ejector plate through the transverse boss on the swing arm, and the ejector spring elastically ejects the swing arm, so that the ejector spring can be arranged far away from the upper die plate, the damage to the ejector spring caused by high temperature generated in the casting process is reduced, and the service life of the ejector spring can be effectively prolonged. In addition, the ejector plate is supported on the transverse boss, and the ejector plate can be completely arranged in the right space of the swing arm, so that the ejector plate does not obstruct the dismounting and replacement of the ejector spring. When the jacking spring is replaced, the jacking needle plate limiting device is firstly integrally detached from the upper template, and the rocker arm is pulled rightwards, so that the jacking spring can be replaced. The ejector pin plate does not need to be disassembled, and the operation is very convenient.
The technical scheme is that the positioning base is provided with a groove part which vertically extends upwards, the lower end part of the swing arm is rotatably arranged in the groove part, and the jacking spring is arranged between the swing arm and the bottom wall of the groove part. Therefore, the top pressure spring and the swing arm are connected to the positioning base, and the swing arm and the top pressure spring are integrated together to form an independent standard functional module through the positioning base, so that the installation, the popularization and the application are facilitated. In addition, the groove part can position the swing arm in the front-back direction, and the swing arm is prevented from deflecting under stress when the swing arm supports the ejector plate. Meanwhile, the swing arm can also be used as a guide mechanism in the swinging process of the swing arm in the left and right directions.
The technical scheme can be further that a pair of mounting through holes which are arranged in a front-back manner are formed in the positioning base, and the mounting through holes penetrate through the positioning base from top to bottom; the jacking spring is arranged between the pair of mounting through holes. Thus, a pair of locking screws pass through a pair of mounting through holes of the positioning base respectively to fix the positioning base to the upper template. The locking screw can not only position the positioning base, but also enhance the supporting strength of the positioning base, and prevent the positioning base from bending backward and deforming when bearing the reaction force of the jacking spring.
The swing arm mechanism further comprises a swing limiter, and the swing limiter is used for limiting the maximum stroke of the swing arm swinging rightwards. Therefore, the swing arm can be prevented from swinging rightwards to separate from the top pressure spring, and meanwhile, the top pressure spring can be prevented from being distorted.
The technical scheme can be further characterized in that the swing limiting device is a limiting nail, one end of the limiting nail is movably sleeved on the positioning base, and the other end of the limiting nail is locked on the swing arm. Therefore, when the jacking spring is replaced, after the jacking needle plate limiting device is integrally detached from the upper template, the limiting nail needs to be loosened firstly, the limiting of the limiting nail on the rocker arm is released, and the rocker arm can be pulled rightwards to replace the jacking spring.
The invention also provides a die using the ejector plate limiting device, which comprises at least one pair of ejector plate limiting devices, an upper die plate and the ejector plate positioned above the upper die plate, wherein all the ejector plate limiting devices are fixedly connected to the upper die plate and support the ejector plate together.
The further technical scheme can also be that the device further comprises a pair of locking screws, and the pair of locking screws respectively penetrate through the pair of mounting through holes of the positioning base to fixedly connect the positioning base to the upper template; the mounting through hole is positioned outside the vertical projection area of the ejector plate. Therefore, the ejector plate does not shield the mounting through hole to influence the mounting and dismounting of the locking screw, and the ejector plate limiting device can be conveniently mounted or dismounted under the condition that the ejector plate is not detached.
The technical scheme can be further characterized in that an upper positioning blind hole is formed in the bottom end portion of the positioning base, a lower positioning blind hole is formed in the upper template, and the positioning base is arranged on the upper template and enables the upper positioning blind hole and the lower positioning blind hole to be in butt joint up and down; the positioning pin is arranged in the upper positioning blind hole and the lower positioning blind hole at the same time. Therefore, the positioning pin improves the positioning precision of the ejector plate limiting device.
The technical scheme is that the ejector pin plate structure comprises a horizontal boss, an ejector pin plate is arranged on the horizontal boss, and the ejector pin plate structure comprises an ejector pin plate and a horizontal boss. Therefore, the edge covering block can protect the outer edge of the ejector plate and prevent the outer edge of the ejector plate from directly jacking the transverse boss to cause damage.
The ejector plate limiting device and the ejector plate limiting device can be applied to the ejector plate limiting device and a die due to the characteristics and the advantages.
Drawings
FIG. 1 is a schematic structural diagram of an ejector plate limiting device in the prior art;
fig. 2 is a schematic perspective view of an ejector plate limiting device applying the technical scheme of the invention;
FIG. 3 is a schematic view of an exploded structure of the ejector plate retainer shown in FIG. 2;
FIG. 4 is a schematic top view of the ejector plate retainer shown in FIG. 2;
fig. 5 isbase:Sub>A schematic sectional view in the direction ofbase:Sub>A-base:Sub>A in fig. 4, in which the upper mold plate 8 and the ejector plate 9 are indicated by broken lines, respectively;
fig. 6 is a schematic cross-sectional view taken along the direction B-B in fig. 5, in which the upper mold plate is partially shown in broken lines.
Detailed Description
The structure of the ejector plate limiting device and the ejector plate limiting device applied to the technical scheme of the invention applied to a die is further explained by combining the accompanying drawings.
As shown in fig. 5, the present invention further provides a mold using an ejector plate spacing device 100, which includes at least a pair of ejector plate spacing devices 100 (only one of the ejector plate spacing devices 100 is shown in the figure), an upper mold plate 8, and the ejector plate 9 located above the upper mold plate 8, wherein all the ejector plate spacing devices 100 are fixedly connected to the upper mold plate 8 and support the ejector plate 9 together. The outer edge of the ejector plate 9 is wrapped by a wrapping block 91, and the wrapping block 91 is pressed against the transverse boss 10 of the ejector plate limiting device 100. Therefore, the edge covering block 91 can protect the outer edge of the ejector plate 9, and the outer edge of the ejector plate 9 is prevented from directly ejecting the transverse boss 10 to cause damage.
The structure of the ejector plate retainer 100 will now be described. As shown in fig. 2, 3 and 4, the ejector plate spacing device 100 includes a positioning base 3 and a vertically arranged swing arm 1. The positioning base 3 is a member for providing fixed-point support for the swing arm 1, and may be a structure that is provided on the upper die plate 8 and is integrally formed with the upper die plate 8. In this embodiment, the positioning base 3 is a member that is separate from the upper board 8 and is attached to the upper board 8. The positioning base 3 is provided with a groove portion 30 vertically extending upwards, and the lower end portion 11 of the swing arm 1 is rotatably arranged on the groove portion 30 through the rotating shaft 4. And a top pressure spring 2 is arranged between the swing arm 1 and the bottom wall of the groove part 30. The jacking spring 2 is arranged on the left side of the swing arm 1 and can elastically jack the swing arm 1 towards the right. Thus, the top pressure spring 2 and the swing arm 1 are both connected to the positioning base 3, and the swing arm 1 and the top pressure spring 2 are integrated together into an independent standard functional module through the positioning base 3, so that the installation, popularization and application are facilitated. In addition, the groove part 30 can position the swing arm 1 in the front-back direction, and the swing arm 1 is prevented from deflection caused by stress when supporting the ejector plate 9. And can also be used as a guide mechanism in the process of swinging the swing arm 1 in the left-right direction.
And a transverse boss 10 is fixedly connected to the right side surface of the upper end part 12 of the swing arm 1. The transverse boss 10 is used for supporting the ejector plate 9. The transverse boss 10 may be a separate member from the swing arm 1 and attached to the swing arm 1. In the present embodiment, the lateral boss 10 is a structure provided on the swing arm 1 and integrally molded with the swing arm 1. When the swing arm 1 swings left and right around the rotating shaft 4, the transverse boss 10 also moves left and right along with the swing arm 1. In this way, the top pressure spring 2 can apply a right top pressure to the swing arm 1, so that the transverse boss 10 can overcome the weight of the ejector plate 9, and the ejector plate 9 can be supported to prevent the ejector plate 9 from falling. When a driving device applies a downward external acting force to the ejector plate 9, the ejector plate 9 can overcome the jacking force of the jacking spring 2 to force the swing arm 1 to swing towards the left side, and meanwhile, the transverse boss 10 also moves towards the left to avoid the ejector plate 9, and at this time, the ejector plate 9 can slide downwards. In order to limit the maximum stroke of the swing arm 1 swinging to the right, the ejector plate limiting device 100 further comprises a swinging limiter. In this embodiment, the swing limiter is a limit pin 6, one end of the limit pin 6 is movably sleeved on the positioning base 3, and the other end of the limit pin is locked on the swing arm 1. Therefore, the swing arm can be prevented from swinging rightwards to separate from the top pressure spring, and meanwhile, the top pressure spring can be prevented from being distorted.
In order to facilitate the installation of the ejector plate limiting device 100 on the upper template 8, a pair of installation through holes (31, 32) respectively arranged at the front side and the rear side of the groove portion 30 are arranged on the positioning base 3, and the installation through holes (31, 32) penetrate through the positioning base 3 from top to bottom. The top pressure spring 2 is arranged between the pair of mounting through holes (31, 32). The positioning device is characterized by further comprising a pair of locking screws (5, 5 a), wherein the pair of locking screws (5, 5 a) respectively penetrate through the pair of mounting through holes (31, 32) to fixedly connect the positioning base 3 to the upper template 8. In this way, the locking screws (5, 5 a) can not only position the positioning base 3, but also enhance the supporting strength of the positioning base 3 to prevent the positioning base 3 from being deformed in a backward tilting manner when the positioning base 3 receives the reaction force of the top pressure spring 2. In addition, in order to facilitate the mounting and dismounting of the locking screws (5, 5 a), all the mounting through holes (31, 32) of the ejector plate stopper 100 are located outside the vertical projection area of the ejector plate 9. Thus, the ejector plate 9 does not obstruct the mounting through holes (31, 32) to affect the mounting and dismounting of the locking screws (5, 5 a), so that the ejector plate limiting device 100 can be conveniently mounted or dismounted without detaching the ejector plate 9.
As shown in fig. 6, an upper positioning blind hole is formed at the bottom end of the positioning base 3, a lower positioning blind hole is formed in the upper template 8, and the positioning base 3 is arranged on the upper template 8 and is in up-and-down butt joint with the upper positioning blind hole and the lower positioning blind hole; the positioning device also comprises positioning pins (50 and 50 a), wherein the positioning pins (50 and 50 a) are simultaneously arranged in the upper positioning blind hole and the lower positioning blind hole. Thus, the positioning accuracy of the ejector plate stopper device 100 is improved by the positioning pins (50, 50 a).
According to the technical scheme, the ejector plate limiting device 100 supports the ejector plate 9 through the transverse boss 10 on the swing arm 1, and the ejector spring 2 elastically ejects the swing arm 1, so that the ejector spring 2 can be arranged far away from the upper template 8, the damage to the ejector spring 2 caused by high temperature generated in the casting process is reduced, and the service life of the ejector spring 2 can be effectively prolonged. In addition, as the ejector plate 9 is supported on the transverse boss 10, the mounting through holes (31, 32) of the ejector plate limiting device 100 can be arranged outside the vertical projection area of the ejector plate 9, so that the ejector plate 9 does not shield the mounting through holes (31, 32) to influence the mounting and dismounting of the locking screws (5, 5 a), the ejector plate limiting device 100 can be conveniently mounted or dismounted without dismounting the ejector plate 9, and the dismounting and the replacement of the ejector spring 2 are further facilitated. When the jacking spring 2 needs to be replaced, the jacking needle plate limiting device 100 is firstly integrally detached from the upper template 8, then the limiting nail 6 is loosened to relieve the limiting of the limiting nail 6 on the rocker arm 1, and finally the jacking spring 2 can be replaced by pulling the rocker arm 1 rightwards. The ejector plate 9 does not need to be disassembled, and the operation is very convenient.
Claims (7)
1. The ejector plate limiting device is characterized by comprising a positioning base and a vertically arranged swing arm, wherein a groove part vertically extending upwards is formed in the positioning base, and the lower end part of the swing arm is rotatably arranged in the groove part; the positioning base is also provided with a pair of mounting through holes which are respectively arranged at the front side and the rear side of the groove part, the mounting through holes penetrate through the positioning base from top to bottom, and locking screws for fixing the positioning base can penetrate through the mounting through holes; a jacking spring capable of elastically jacking the swing arm towards the right is arranged on the left side of the swing arm, and the jacking spring is arranged between the swing arm and the bottom wall of the groove part; and a transverse boss is fixedly connected to the right side surface of the upper end part of the swing arm, and a supporting surface which obliquely extends towards the lower right and is used for supporting the ejector plate is arranged on the transverse boss.
2. The ejector plate spacing device of claim 1, further comprising a swing spacer for limiting the maximum stroke of the swing arm swinging to the right.
3. The ejector plate limiting device as claimed in claim 2, wherein the swing limiter is a limiting nail, one end of the limiting nail is movably sleeved on the positioning base, and the other end of the limiting nail is locked on the swing arm.
4. A mold using the ejector plate retainer according to any one of claims 1 to 3, comprising at least a pair of the ejector plate retainer, an upper mold plate, and the ejector plate located above the upper mold plate, all the ejector plate retainers being fixedly attached to the upper mold plate and supporting the ejector plate together.
5. The mold of claim 4, further comprising a pair of locking screws, each of said pair of locking screws passing through a respective one of said pair of mounting holes of said positioning base to secure said positioning base to said upper platen; the mounting through holes are positioned outside the vertical projection area of the ejector plate.
6. The mold according to claim 5, wherein an upper positioning blind hole is provided on a bottom end portion of the positioning base, a lower positioning blind hole is provided on the upper mold plate, and the positioning base is provided on the upper mold plate and allows the upper positioning blind hole and the lower positioning blind hole to be butted up and down; the positioning pin is arranged in the upper positioning blind hole and the lower positioning blind hole simultaneously.
7. The mold of claim 4, 5 or 6, further comprising a binding block wrapped around the outer edge of the ejector plate, the binding block pressing against the lateral boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429463.3A CN107116200B (en) | 2017-06-08 | 2017-06-08 | Thimble board stop device and mould of using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429463.3A CN107116200B (en) | 2017-06-08 | 2017-06-08 | Thimble board stop device and mould of using thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107116200A CN107116200A (en) | 2017-09-01 |
| CN107116200B true CN107116200B (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710429463.3A Active CN107116200B (en) | 2017-06-08 | 2017-06-08 | Thimble board stop device and mould of using thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107116200B (en) |
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| Publication number | Publication date |
|---|---|
| CN107116200A (en) | 2017-09-01 |
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